Both male and female inland bearded dragons have 'beards'—expandable dewlaps with spiky scales just under their mouths. The dewlap can be used for mating and displays of aggression. The dragons can inflate their beards and turn them black to appear more intimidating.

Another way that inland bearded dragons communicate is through arm waving. The dragon will stand on three legs and wave one of its forelimbs in a circular motion. This behavior is used for species recognition and as a sign of submission to larger, dominant dragons.

Bearded dragons eat plants, insects, spiders, and sometimes small rodents or lizards. Because they may not always be able to find a meal, bearded dragons have large stomachs that can hold a sizeable amount of food at any one time.

Females lay as many as 24 eggs at a time. They are buried in a burrow for about two months before they hatch. It is possible for an inland bearded dragon to lay several clutches of eggs in one year.